
Aztec Calendar, National Museum of Anthropology, Mexico City
Mistakenly identified as a calendar, this was a large stone used in sacrificial ceremonies. The Aztec calendar is based on 20 day signs, which are in turn each ruled by a god.

Aztec Calendar, National Museum of Anthropology, Mexico City
Mistakenly identified as a calendar, this was a large stone used in sacrificial ceremonies. The Aztec calendar is based on 20 day signs, which are in turn each ruled by a god.